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Vast and majestic, the Grand Canyon represents one of science’s most challenging puzzles: How did this massive canyon come to be? This is the story of the search for the answers, and the first account of the consensus geologists have reached in the last few years.

A scientific detective tale packed with colorful characters, Grand Canyon follows the explorers, adventurers, and geologists whose efforts led to the understanding of the canyon’s mysteries. Modern scientists have revealed that the Colorado River once ran in the opposite direction—and for many years flowed hundreds of feet beneath the ground. These efforts also led directly to the discovery of tectonic plates, one of the most important advancements in the history of geology. An eloquent, breathtaking narrative, Grand Canyon is a fascinating true story that is as epic as its subject. BACKCOVER: “Powell’s well-crafted account makes one appreciate just how [the Grand Canyon] came to be so grand.” —Natural History

“Grand Canyon will be enjoyed by anyone who is curious about how geologists think, piece together disparate information, and assemble explanations.” —Science

“What many readers will walk away with is a sense of the awesome power of water running over the surface of the earth.” —Kirkus Reviews

Read information about the author

Dr. James L. Powell graduated from Berea College with a degree in Geology. He holds a Ph.D. in Geochemistry from the Massachusetts Institute of Technology and taught Geology at Oberlin College for over 20 years.

He served as Acting President of Oberlin, President of Franklin and Marshall College, President of Reed College, President of the Franklin Institute Science Museum in Philadelphia, and President and Director of the Los Angeles County Museum of Natural History.

Powell currently serves as Executive Director of the National Physical Science Consortium. Asteroid 1987 SH7 is named for him.